Metal window sash



Nov. 3, 1964 M. l. PLACE 3,155,205

METAL WINDOW SASH Filed April 9, 1962 2 Sheets-Sheet 1 6 INVENTOR. M424 1. PLACE y 7 BY 7 aM,MW,fl-Oz%.

2 V0 \5 ATTORNEYS United States Patent 3,155,205 METAL WINDGW SAH Mark I. Place, Pittsburgh, Pa, assignor to E. K. Geyser Company, Pittsburgh, Pa., a corporation of Pennsylvania Filed Apr. 9, 1962, Ser. No. 186,234 '2 Claims. (Cl. 189-78) This invention relates to metal window sash, and more particularly to the type in which two metal parts are assembled to form a glazing chase in the sash.

Metal window sash, especially that which is used for factories, schools, ofllce buildings and the like, is often formed from metal extrusions that are connected together as the window glass is put in place, whereby to form a chase for receiving the glass. In some cases the extrusions are interlocked by a snap-in action, but that requires very light gauge metal to produce the necessary spring, so strength and extrusion problems arise. In other cases fasteners are used to connect the extrusions, but that involves additional fabrication in the form of drilling holes and applying screws or the like. There also are slide-on connections, but they depend entirely on friction for their holding power and therefore are not completely reliable.

It is among the objects of this invention to provide a metal window sash which can be made of extrusions of any desired strength and rigidity, which does not require fasteners or friction to hold the extrusions together, and in which the extrusions are held in interlocking relation by the window glass and adjoining gaskets between it and the extrusions.

In accordance with this invention, part of the sash is composed of a metal rail having a body that is substantially L-shaped in cross section, with a face and an inner side meeting at substantially a right angle. The free edge of the face supports a sealing gasket strip against one side of the window glass projecting into the glazing chase. The other part of the sash is a metal glazing bead that has a flange opposite the face of the rail and substantially parallel to it. The flange extends from the inner side of the rail to a point overlapping the opposite side of the glass. At that point the flange has a free edge formed to hold a sealing gasket strip against the glass. The rail is provided with a longitudinal groove removably receiving a portion of the glazing bead to hold the bead against movement away from the rail. The rail also is provided with a portion normally engaged by the head to prevent swinging of the bead away from the face of the rail as long as the bead extends into the groove. However, when the bead-supported gasket is not present, the bead can be moved toward the face of the rail to release the bead so that it can be removed laterally from the rail. Reversing this procedure permits the glazing bead and rail to be assembled to form the glazing chase of the sash.

The invention is illustrated in the accompanying drawings, in which FIG. 1 is a fragmentary front view of a window incorporating my invention;

FIG. 2 is an enlarged horizontal cross section of the sash rail before the glazing head has been connected to it;

FIG. 3 is a view similar to FIG. 2, but showing the bead inserted in the rail before being moved into final position;

PEG. 4 is a section showing the glazing bead held in final position by the adjoining gasket strip; and

FIGS. 5, 6, 7 and 8 are sectional views similar to FIG. 4, showing four additional embodiments of the invention.

Referring to FIGS. 1 to 4 of the drawings, a window mounted in the wall 1 of a building includes a metal sash 2 and one or more panes of glass 3 mounted in the glazing chase of the sash. The metal sash consists of two parts, a metal rail R and a metal glazing :bead B. Each of these preferably is an extrusion, aluminum being a good metal for that purpose. The metal rail is substantially L-shaped in cross section so that it has two sides meeting at substantially a right angle. The inner side 4 of the rail fits in the window frame, and the outer side 5, called the face herein, is parallel to the glass. The face may be either inside or outside the window, depending on various factors. For convenience of description only, the face will be considered herein as being at the front of'the sash. The free edge of the face is suitably connected with a sealing gasket strip 6 of neoprene rubber or the like, which it holds against the front surface of the glass 3 that extends across the rib and into the glazing chase of the sash. A convenient way of making the connection is to provide the rail with an integral rib 7 extending throughout the length and inward toward the glass, with the rib projecting into a longitudinal groove in the gasket. The free edge of the inner side 4 of the raillikewise has a rib 8 extending throughout its length. The rib extends inward opposite the face of the rail and then forward toward it a short distance to form a longitudinal groove 9 facing forward.

The metal glazing bead B, which closes the back side of the glazing chase 10 and overlies the rear surface of the glass in spaced relation therewith, likewise is substantially L-shape in cross section. As shown in FIG. 4, it has an exposed outer flange 11 that extends from grooved rib 8 substantially parallel with rail face 5 to a point opposite gasket rib 7. At this point the free edge of the flange is provided with a longitudinally extending recess 12 that receives a compressible sealing gasket strip 13 and holds it against the window glass. The glass therefore is supported between the two gaskets, which make it weather tight. The glazing bead also has a concealed inner flange 14 that is disposed beside the inner surface of the inner side 4 of the rail, and the rear edge of this flange has a projection 15, preferably extending the full length of the bead, fitting in groove 9 to keep the head from moving parallel to the glass or backward away from the face of the rail. However, the free front edge of inner flange 14 is spaced from the rail face sufficiently to permit bead projection 15 to be retracted from the groove when gasket 13 is not present.

The rail face 5 is provided with a lateral projection, preferably in the form of a longitudinal rib 17, that overlaps and engages the inner side of the inner flange 14 of glazing bead B near the face. This rib prevents the inner flan e from being swung away from. the inner side of the rail, and thereby prevents the outer flange ll of the head from being swung away from the rail face and the glass. However, rib 17 is spaced from the inner side of the rail far enough to prevent the inner flange of the glazing head from interfering with tilting of the free edge of the outer flange forward toward the glass after gasket 13 has been removed and the head has been moved forward bodily to release it from groove 9, as shown in FIG. 3. The glazing head can be tilted forward far enough to permit projection 15 to clear rib 8 and allow its inner flange 14 to be pulled out of the rail.

Of course, removal of the glazing head from the rail ordinarily will not be required unless it becomes necessary to replace thewindow glass, but it will be understood from the explanation that has just been given that in assembling the Window the procedure just outlined is reversed. That is, afterthe glass has been placed against front gasket 6 held by the rail R, as shown in FIG. 2, head B is tilted relative to the rail and the free edge of its inner flange 14 is inserted between the rib l7 and the inner side d of the rail as shownin FIG. 3. Then the head is straightened in the rail by swinging the free edge of its outer flange 11 away from the glass, whereupon the entire bead is pulled backward away from the glass to insert its projection 15 into rail groove 9 as shown in FIG. 4. The bead then is locked in that position by forcing gasket 13 laterally into the space between the bead and the glass until the gasket seats in recess 12. The gasket, by prevening withdrawal of the bead from the rail groove, insures that the bead and rail are securely locked together mechanically. N fasteners are used.

he rail R shown in the embodiment of the invention in FIG. has the same general shape as the one in FIG. 2, but in place of a rib along the face of the rail, its inner side 21 is provided along its inner surface with a longitudinal rib 22 spaced from the face and provided with a groove 23 facing forward. This rib is spaced from the grooved rib 24' at the free edge of the inner side of the rail. The glazing bead B is substantially L-shape, and its inner flange 25 is provided on its outer surface with a pair of projections 25 and 27, preferably in the form of longitudinal ribs, that hook into grooved ribs 22 and 24, respectively, to prevent the bead from moving both away from rail face 20 and sideways away from inner side 21 of the rail. The head and rail therefore are locked together as long as a gasket strip is compressed between the free edge of the outer flange 2% of the bead and a pane of glass projecting into the glazing chase 29. In the absence of such a gasket, the glazing bead can be moved toward the rail face far enough to release ribs 26 and 27 from ribs 22 and 24, whereupon the bead can be moved away from the inner side of the rail and then completely separated from the rail.

In the modification shown in FIG. 6, the inner side 31 of the rail R is considerably wider than the one just described and it extends back beyond the longitudinal rib 32 in which the groove 33 is formed. Although the glazing bead B remains substantially L-shape, its inner flange 3 extends backward instead of forward and engages the inner surface of the inner side of the rail behind the rib. The outer flange 35 of the bead is provided with a projection as that extends forward beside rib 32 toward the face 3'7 of the rail and then around into the groove. This connection serves the same purpose as the one described in PEG. 4. Likewise, engagement of the inner flange 34 of the head with the inner side of the rail prevents the recessed free edge of the outer flange of the bead from swinging back out of parallel relation with face 37 of the rail. While a sealing gasket is compressed between the free edge of flange 35 and the window glass (not shown), that flange is held spaced from rib 32 as shown, but when such a gasket is not present, the bead can be moved forward toward the rail face far enough to permit the bead to be unhooked from the rib and then separated from the rail. Of course, in assembling the window glass and sash this procedure is reversed.

in the form of the invention shown in FIG. 7, the groove 4t) opens laterally toward the inner side 41 of the rail R instead of toward the face 42 of the rail. Also, the rib 43 that forms the groove projects from the inner surface of'the rail face near inner side 41. The concealed inner flange 34 of the glazing bead B engages at least the rear part of the inner surface of inner side 41 of the rail and has a lateral projection 45 along its free edge which extends into the groove to hold the bead in place. T he outer flange 4d of the bead extends across the free edge of the innerside of the rail, which preferably is provided with a laterally projecting portion 4'7 engaged by the inner surface of that flange. It will be seen that the recessed edge of the glazing head, in the absence of a gasket strip, can be tilted toward the face of the rail.

the tilted inner flange to be unhooked from the rib so that the head can be separated from the rail.

The rail R shown in FIG. 8 has a narrow longitudinal rib 5d projecting from the outer surface of its inner side 51, from which also projects a much widerlateral flange 52. The rib and flange form a groove 53 between them. Extending into this groove is a projection 54 on a narrow inner flange 55 forming part of the glazing bead B. The outer flange es of the bead extends away from both sides 5 its inner flange, and the edge of the outer flange at the grooved side of the rail fits in a notch 57 in the free edge of lateral flange 52, which extends both laterally and rearwardly far enough for that purpose. Consequently, it will be'seen that as long as a gasket strip is compressed between the bead and the glass (not shown), the glazing head can be moved neither to left nor right an appreciable distance, and groove 53 prevents the gasket edge of the head from being swung back away from the rail face; To remove the bead from the rail after the gasket has been removed from between bead and glass, the head is tilted relative to the rail so that the left-hand edge of the bead will leave notch 57 in order to permit the entire head to be moved toward the left for retracting projection 54 from the groove. v,

According to the provisions of the patent statutes, I have explained the principle of my invention and have illustrated and described what I now consider to represent its best embodiment. However, I desire to have it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described.

I claim:

1. A window sash for holding sealing gasket strips against the opposite sides of a pane of glass projecting into the glazing chase with which the sash is provided, the sash comprising a metal rail having a body substantially L-shape in cross section with a face and an inner side meeting at substantially a right angle, a gasket strip mounted on the free edge of the face for engaging only one side of the glass pane, a rigid one-piece metal glazing bead having a flange opposed to and substantially paraliel to said face and extending from said inner side of the rail to a point where it has a free'edge, the rail being provided with a longitudinal groove, the bead having an integral hook-like portion removably disposed in said groove for hooking the bead onto the rail, said groove and hook-like portion being positioned to hold the'bead against straight line movement away from the rail, and the rail also being provided with a portion normally engaged by the glazing bead to prevent swinging of said flange away from said face of the rail as long as the bead extends into said groove, and a second gasket strip compressible between said free edge of the bead and the glass pane and normally holding the bead in engagement with said rail portion, the second gasket being removable laterally from the bead, and said bead flange being movable toward said face of the rail and out of said groove in the absence of said second gasket strip;

2. A window sash for holding sealing gasket strips against the opposite sides of a pane of glass projecting into the glazing chase with which the sash is provided, the sash comprising a' metal rail having a body substantially L-shape in cross section with a face and an inner side meeting at substantially a right angle, the free edge of the face opposite said inner side being formed for supporting a gasket strip, and a metal glazing bead having an outer flange opposed to said face and extending from the free edge portion of said inner side of the rail substantially parallel to said face to a point Where it has afree edge formed to hold a gasket strip, the outer surface of said inner side of the railbeing provided with an outwardly projecting longitudinal rib and with an outwardly projecting lateral flange between that rib and the planeof said faceforming a laterallyopening longitudinal groove, said outwardly projecting lateral flange having a rearwardly extendingportion, theouter flange of the glazing bead extending across said inner side of the rail and having an inner flange projecting therefrom with a laterally projecting portion extending into the groove, and said lateral flange of the rail extending laterally beyond said inner flange of the bead and its rearwardly extending portion engaging the inner surface of the outer flange of the bead and its adjoining free edge to hold the head in the groove and prevent its gasket-holding edge from swinging away from said face of the rail, said bead being tiltable toward said face to disengage the bead from said rearwardly extending portion of the lateral flange of the rail and permit said inner flange of the head to be released from the groove.

References Cited in the file of this patent UNITED STATES PATENTS Andersson July 23, 1940 Huizenga Sept. 16, 1952 Wagner Sept. 24, 1957 Nawrnan Dec. 13, 1960 Muessel May 16, 1961 Muessel Mar. 6, 1962 Blaszkowski Nov. 20, 1962 Brown May 21, 1963 FOREIGN PATENTS Great Britain Mar. 9, 1955 

1. A WINDOW SASH FOR HOLDING SEALING GASKET STRIPS AGAINST THE OPPOSITE SIDES OF A PANE OF GLASS PROJECTING INTO THE GLAZING CHASE WITH WHICH THE SASH IS PROVIDED, THE SASH COMPRISING A METAL RAIL HAVING A BODY SUBSTANTIALLY L-SHAPE IN CROSS SECTION WITH A FACE AND AN INNER SIDE MEETING AT SUBSTANTIALLY A RIGHT ANGLE, A GASKET STRIP MOUNTED ON THE FREE EDGE OF THE FACE FOR ENGAGING ONLY ONE SIDE OF THE GLASS PANE, A RIGID ONE-PIECE METAL GLAZING BEAD HAVING A FLANGE OPPOSED TO AND SUBSTANTIALLY PARALLEL TO SAID FACE AND EXTENDING FROM SAID INNER SIDE OF THE RAIL TO A POINT WHERE IT HAS A FREE EDGE, THE RAIL BEING PROVIDED WITH A LONGITUDINAL GROOVE, THE BEAD HAVING AN INTEGRAL HOOK-LIKE PORTION REMOVABLY DISPOSED IN SAID GROOVE FOR HOOKING THE BEAD ONTO THE RAIL, SAID GROOVE AND HOOK-LIKE PORTION BEING POSITIONED TO HOLD THE BEAD AGAINST STRAIGHT LINE MOVEMENT AWAY FROM THE RAIL, AND THE RAIL ALSO BEING PROVIDED WITH A PORTION NORMALLY ENGAGED BY THE GLAZING BEAD TO PREVENT SWINGING OF SAID FLANGE AWAY FROM SAID FACE OF THE RAIL AS LONG AS THE BEAD EXTENDS INTO SAID GROOVE, AND A SECOND GASKET STRIP COMPRESSIBLE BETWEEN SAID FREE EDGE OF THE BEAD AND THE GLASS PANE AND NORMALLY HOLDING THE BEAD IN ENGAGEMENT WITH SAID RAIL PORTION, THE SECOND GASKET BEING REMOVABLE LATERALLY FROM THE BEAD, AND SAID BEAD FLANGE BEING MOVABLE TOWARD SAID FACE OF THE RAIL AND OUT OF SAID GROOVE IN THE ABSENCE OF SAID SECOND GASKET STRIP. 